Adding more yellow paints to the default options.#1214

The dafault painting colours have some great variety. However all of the yellows (mainly in the ‘sun’ colour palette) are more orange and when mixed with blue they produce mauve. It would be nice to be able to mix a variety of greens and to use some yellow colours.
Love the game.

jep, also missed a bright lemon tone.

Tbh I have more issues with green than yellow but Im sure that just more variety in paint colors added per update is going to be nice like as more factions are added or maybe I just need to learn to mix and stuff better